Colin Guthrie wrote:
admin wrote:
Inside the body of method foo() you can of course use syntax like
parent::foo(). But is there a way to call the parent version of
obj->foo() outside the class? That kind of syntax is allowed in C++, for
example: Aclass a; if (a.Aparent::foo()) ...;
[snipped]
I agree with Jochem that if you find you need to do this, then you're
probably not designing the code correctly.
OK, here we go: Propel in Symfony uses generated model classes
representing DB rows, stub classes inheriting from them ready to be used
(such as below), and accessors representing data columns:
class Foo extends BaseFoo
{
public function setBar($value)
{
$this->doSetColumn(FooPeer::BAR, $value, __FUNCTION__);
}
public function setBaz($value)
{
$this->doSetColumn(FooPeer::BAZ, $value, __FUNCTION__);
}
public function setXyzzy($value)
{
$this->doSetColumn(FooPeer::XYZZY, $value, __FUNCTION__);
}
// several more of these, and finally...
private function doSetColumn($colname, $value, $col_mutator)
{
/* setter does what it has to do and calls the parent
* version of self to do the real work of modifying
* state
*/
// ...
if ($something)
parent::$col_mutator($junk_to_trigger_modified);
// ...
parent::$col_mutator($value);
}
}
There are several models (tables) such as Foo, and they all have the
same body of doSetColumn(), so a logical next step was to factor that
method away _and_ leave most of the code intact, in which I've failed.
Once again, calling the parent version of a method "externally" is
allowed in C++ (and whoever said it was bad design should speak up to
Bjarne Stroustrup ;-)) Any such trick in PHP?
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